From b5e1b8cee7ad58a15d2fa79bcd7946acb592602d Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@kernel.org>
Date: Mon, 21 May 2012 09:26:59 +1000
Subject: [PATCH] md: using GFP_NOIO to allocate bio for flush request

A flush request is usually issued in transaction commit code path, so
using GFP_KERNEL to allocate memory for flush request bio falls into
the classic deadlock issue.

This is suitable for any -stable kernel to which it applies as it
avoids a possible deadlock.

Cc: stable@vger.kernel.org
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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